Which of the following is evidence that the early Universe was hot and dense?
A) intense X-ray emission from gas in galaxy clusters
B) The ratio of helium to hydrogen is approximately the same in all old stars.
C) the cosmic microwave background
D) the intense luminosity of quasars
Correct Answer:
Verified
Q29: If the Universe is infinitely large, infinitely
Q30: Astronomers have found the cosmic microwave background
Q31: About what temperature does the CMB have
Q32: Why is the CMB so cool now?
A)
Q33: What is the cosmic microwave background?
A) radio
Q35: Which sequence of events is in the
Q36: When the Universe was young, it was...
A)
Q37: According to the Big Bang model, most
Q38: According to the Big Bang model, in
Q39: When the Universe was young, it was...
A)
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